diff --git a/moo/kernel/Magnitu.moo b/moo/kernel/Magnitu.moo
index 2eeade2..6a55bbd 100644
--- a/moo/kernel/Magnitu.moo
+++ b/moo/kernel/Magnitu.moo
@@ -143,7 +143,7 @@ class(#limited) Number(Magnitude)
 	method mdiv: aNumber
 	{
 		## integer division quotient
-		<primitive: #_integer_mdiv>
+		<primitive: #_number_mdiv>
 		self primitiveFailed.
 	}
 	
@@ -173,31 +173,31 @@ class(#limited) Number(Magnitude)
 
 	method < aNumber
 	{
-		<primitive: #_integer_lt>
+		<primitive: #_number_lt>
 		self primitiveFailed.
 	}
 
 	method > aNumber
 	{
-		<primitive: #_integer_gt>
+		<primitive: #_number_gt>
 		self primitiveFailed.
 	}
 
 	method <= aNumber
 	{
-		<primitive: #_integer_le>
+		<primitive: #_number_le>
 		self primitiveFailed.
 	}
 
 	method >= aNumber
 	{
-		<primitive: #_integer_ge>
+		<primitive: #_number_ge>
 		self primitiveFailed.
 	}
 
 	method negated
 	{
-		<primitive: #_integer_negated>
+		<primitive: #_number_negated>
 		^0 - self.
 	}
 
diff --git a/moo/lib/exec.c b/moo/lib/exec.c
index 0d22f70..e6b875d 100644
--- a/moo/lib/exec.c
+++ b/moo/lib/exec.c
@@ -2879,13 +2879,43 @@ static moo_pfrc_t pf_number_div (moo_t* moo, moo_mod_t* mod, moo_ooi_t nargs)
 	rcv = MOO_STACK_GETRCV(moo, nargs);
 	arg = MOO_STACK_GETARG(moo, nargs, 0);
 
-	res = moo_divnums(moo, rcv, arg);
+	res = moo_divnums(moo, rcv, arg, 0);
 	if (!res) return (moo->errnum == MOO_EINVAL? MOO_PF_FAILURE: MOO_PF_HARD_FAILURE);
 
 	MOO_STACK_SETRET (moo, nargs, res);
 	return MOO_PF_SUCCESS;
 }
 
+static moo_pfrc_t pf_number_mdiv (moo_t* moo, moo_mod_t* mod, moo_ooi_t nargs)
+{
+	moo_oop_t rcv, arg, res;
+
+	MOO_ASSERT (moo, nargs == 1);
+
+	rcv = MOO_STACK_GETRCV(moo, nargs);
+	arg = MOO_STACK_GETARG(moo, nargs, 0);
+
+	res = moo_divnums(moo, rcv, arg, 1);
+	if (!res) return (moo->errnum == MOO_EINVAL? MOO_PF_FAILURE: MOO_PF_HARD_FAILURE);
+
+	MOO_STACK_SETRET (moo, nargs, res);
+	return MOO_PF_SUCCESS;
+}
+
+static moo_pfrc_t pf_number_negated (moo_t* moo, moo_mod_t* mod, moo_ooi_t nargs)
+{
+	moo_oop_t rcv, res;
+
+	MOO_ASSERT (moo, nargs == 0);
+
+	rcv = MOO_STACK_GETRCV(moo, nargs);
+
+	res = moo_negatenum(moo, rcv);
+	if (!res) return (moo->errnum == MOO_EINVAL? MOO_PF_FAILURE: MOO_PF_HARD_FAILURE);
+
+	MOO_STACK_SETRET (moo, nargs, res);
+	return MOO_PF_SUCCESS;
+}
 
 static moo_pfrc_t pf_number_eq (moo_t* moo, moo_mod_t* mod, moo_ooi_t nargs)
 {
@@ -2919,6 +2949,70 @@ static moo_pfrc_t pf_number_ne (moo_t* moo, moo_mod_t* mod, moo_ooi_t nargs)
 	return MOO_PF_SUCCESS;
 }
 
+static moo_pfrc_t pf_number_lt (moo_t* moo, moo_mod_t* mod, moo_ooi_t nargs)
+{
+	moo_oop_t rcv, arg, res;
+
+	MOO_ASSERT (moo, nargs == 1);
+
+	rcv = MOO_STACK_GETRCV(moo, nargs);
+	arg = MOO_STACK_GETARG(moo, nargs, 0);
+
+	res = moo_ltnums(moo, rcv, arg);
+	if (!res) return (moo->errnum == MOO_EINVAL? MOO_PF_FAILURE: MOO_PF_HARD_FAILURE);
+
+	MOO_STACK_SETRET (moo, nargs, res);
+	return MOO_PF_SUCCESS;
+}
+
+static moo_pfrc_t pf_number_gt (moo_t* moo, moo_mod_t* mod, moo_ooi_t nargs)
+{
+	moo_oop_t rcv, arg, res;
+
+	MOO_ASSERT (moo, nargs == 1);
+
+	rcv = MOO_STACK_GETRCV(moo, nargs);
+	arg = MOO_STACK_GETARG(moo, nargs, 0);
+
+	res = moo_gtnums(moo, rcv, arg);
+	if (!res) return (moo->errnum == MOO_EINVAL? MOO_PF_FAILURE: MOO_PF_HARD_FAILURE);
+
+	MOO_STACK_SETRET (moo, nargs, res);
+	return MOO_PF_SUCCESS;
+}
+
+static moo_pfrc_t pf_number_le (moo_t* moo, moo_mod_t* mod, moo_ooi_t nargs)
+{
+	moo_oop_t rcv, arg, res;
+
+	MOO_ASSERT (moo, nargs == 1);
+
+	rcv = MOO_STACK_GETRCV(moo, nargs);
+	arg = MOO_STACK_GETARG(moo, nargs, 0);
+
+	res = moo_lenums(moo, rcv, arg);
+	if (!res) return (moo->errnum == MOO_EINVAL? MOO_PF_FAILURE: MOO_PF_HARD_FAILURE);
+
+	MOO_STACK_SETRET (moo, nargs, res);
+	return MOO_PF_SUCCESS;
+}
+
+static moo_pfrc_t pf_number_ge (moo_t* moo, moo_mod_t* mod, moo_ooi_t nargs)
+{
+	moo_oop_t rcv, arg, res;
+
+	MOO_ASSERT (moo, nargs == 1);
+
+	rcv = MOO_STACK_GETRCV(moo, nargs);
+	arg = MOO_STACK_GETARG(moo, nargs, 0);
+
+	res = moo_genums(moo, rcv, arg);
+	if (!res) return (moo->errnum == MOO_EINVAL? MOO_PF_FAILURE: MOO_PF_HARD_FAILURE);
+
+	MOO_STACK_SETRET (moo, nargs, res);
+	return MOO_PF_SUCCESS;
+}
+
 /* ------------------------------------------------------------------ */
 static moo_pfrc_t pf_integer_add (moo_t* moo, moo_mod_t* mod, moo_ooi_t nargs)
 {
@@ -3040,7 +3134,7 @@ static moo_pfrc_t pf_integer_negated (moo_t* moo, moo_mod_t* mod, moo_ooi_t narg
 
 	rcv = MOO_STACK_GETRCV(moo, nargs);
 
-	res = moo_negateint (moo, rcv);
+	res = moo_negateint(moo, rcv);
 	if (!res) return (moo->errnum == MOO_EINVAL? MOO_PF_FAILURE: MOO_PF_HARD_FAILURE);
 
 	MOO_STACK_SETRET (moo, nargs, res);
@@ -3754,8 +3848,14 @@ static pf_t pftab[] =
 	{ "_number_add",                           { pf_number_add,                           1, 1 } },
 	{ "_number_div",                           { pf_number_div,                           1, 1 } },
 	{ "_number_eq",                            { pf_number_eq,                            1, 1 } },
+	{ "_number_ge",                            { pf_number_ge,                            1, 1 } },
+	{ "_number_gt",                            { pf_number_gt,                            1, 1 } },
+	{ "_number_le",                            { pf_number_le,                            1, 1 } },
+	{ "_number_lt",                            { pf_number_lt,                            1, 1 } },
+	{ "_number_mdiv",                          { pf_number_mdiv,                          1, 1 } },
 	{ "_number_mul",                           { pf_number_mul,                           1, 1 } },
 	{ "_number_ne",                            { pf_number_ne,                            1, 1 } },
+	{ "_number_negated",                       { pf_number_negated,                       0, 0 } },
 	{ "_number_sub",                           { pf_number_sub,                           1, 1 } },
 
 	{ "_utf8_seqlen",                          { moo_pf_utf8_seqlen,                      0, 0 } },
diff --git a/moo/lib/moo-prv.h b/moo/lib/moo-prv.h
index f9b7a7e..d91a014 100644
--- a/moo/lib/moo-prv.h
+++ b/moo/lib/moo-prv.h
@@ -1405,7 +1405,8 @@ moo_oop_t moo_mltnums (
 moo_oop_t moo_divnums (
 	moo_t*       moo,
 	moo_oop_t    x,
-	moo_oop_t    y
+	moo_oop_t    y,
+	int          modulo
 );
 
 moo_oop_t moo_gtnums (
@@ -1444,6 +1445,11 @@ moo_oop_t moo_nenums (
 	moo_oop_t    y
 );
 
+moo_oop_t moo_negatenum (
+	moo_t*       moo,
+	moo_oop_t    x
+);
+
 moo_oop_t moo_sqrtnum (
 	moo_t*       moo,
 	moo_oop_t    x
diff --git a/moo/lib/number.c b/moo/lib/number.c
index 1ced6eb..a28908a 100644
--- a/moo/lib/number.c
+++ b/moo/lib/number.c
@@ -259,7 +259,7 @@ moo_oop_t moo_mltnums (moo_t* moo, moo_oop_t x, moo_oop_t y)
 	return mul_nums(moo, x, y, 1);
 }
 
-moo_oop_t moo_divnums (moo_t* moo, moo_oop_t x, moo_oop_t y)
+moo_oop_t moo_divnums (moo_t* moo, moo_oop_t x, moo_oop_t y, int modulo)
 {
 	moo_ooi_t xs, ys, i;
 	moo_oop_t nv;
@@ -304,7 +304,7 @@ moo_oop_t moo_divnums (moo_t* moo, moo_oop_t x, moo_oop_t y)
 		}
 	}
 
-	nv = moo_divints(moo, nv, yv, 0, MOO_NULL);
+	nv = moo_divints(moo, nv, yv, modulo, MOO_NULL);
 	moo_popvolat (moo);
 	if (!nv) return MOO_NULL;
 
@@ -367,6 +367,28 @@ moo_oop_t moo_nenums (moo_t* moo, moo_oop_t x, moo_oop_t y)
 	return comp_nums(moo, x, y, moo_neints);
 }
 
+
+moo_oop_t moo_negatenum (moo_t* moo, moo_oop_t x)
+{
+	if (!MOO_OOP_IS_FPDEC(moo, x))
+	{
+		return moo_negateint(moo, x);
+	}
+	else
+	{
+		moo_oop_t v;
+		moo_ooi_t scale;
+
+		scale = MOO_OOP_TO_SMOOI(((moo_oop_fpdec_t)x)->scale);
+		v = ((moo_oop_fpdec_t)x)->value;
+
+		v = moo_negateint(moo, v);
+		if (!v) return MOO_NULL;
+
+		return moo_makefpdec(moo, v, scale);
+	}
+}
+
 moo_oop_t moo_sqrtnum (moo_t* moo, moo_oop_t x)
 {
 	if (!MOO_OOP_IS_FPDEC(moo, x))
@@ -411,10 +433,10 @@ moo_oop_t moo_absnum (moo_t* moo, moo_oop_t x)
 
 		scale = MOO_OOP_TO_SMOOI(((moo_oop_fpdec_t)x)->scale);
 		v = ((moo_oop_fpdec_t)x)->value;
-		
+
 		v = moo_absint(moo, v);
 		if (!v) return MOO_NULL;
-		
+
 		return moo_makefpdec(moo, v, scale);
 	}
 }